From c930c97326d576f13a52dc3a4595d99fac1ed2e7 Mon Sep 17 00:00:00 2001 From: Christian Pointner Date: Sat, 27 Dec 2008 17:27:45 +0000 Subject: some more memory erros @ tun device fixed added exec script for post up scripts --- src/sysexec.h | 66 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 src/sysexec.h (limited to 'src/sysexec.h') diff --git a/src/sysexec.h b/src/sysexec.h new file mode 100644 index 0000000..2b01bc8 --- /dev/null +++ b/src/sysexec.h @@ -0,0 +1,66 @@ +/* + * ľAnytun + * + * ľAnytun is a tiny implementation of SATP. Unlike Anytun which is a full + * featured implementation ľAnytun has no support for multiple connections + * or synchronisation. It is a small single threaded implementation intended + * to act as a client on small platforms. + * The secure anycast tunneling protocol (satp) defines a protocol used + * for communication between any combination of unicast and anycast + * tunnel endpoints. It has less protocol overhead than IPSec in Tunnel + * mode and allows tunneling of every ETHER TYPE protocol (e.g. + * ethernet, ip, arp ...). satp directly includes cryptography and + * message authentication based on the methodes used by SRTP. It is + * intended to deliver a generic, scaleable and secure solution for + * tunneling and relaying of packets of any protocol. + * + * + * Copyright (C) 2007-2008 Christian Pointner + * + * This file is part of ľAnytun. + * + * ľAnytun is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 3 as + * published by the Free Software Foundation. + * + * ľAnytun is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with ľAnytun. If not, see . + */ + +#ifndef _SYSEXEC_H_ +#define _SYSEXEC_H_ + +int exec_script(const char* script, const char* ifname) +{ + if(!script || !ifname) + return; + + pid_t pid; + pid = fork(); + if(!pid) { + int fd; + for (fd=getdtablesize();fd>=0;--fd) // close all file descriptors + close(fd); + + fd = open("/dev/null",O_RDWR); // stdin + if(fd == -1) + log_printf(WARNING, "can't open stdin"); + else { + if(dup(fd) == -1) // stdout + log_printf(WARNING, "can't open stdout"); + if(dup(fd) == -1) // stderr + log_printf(WARNING, "can't open stderr"); + } + return execl("/bin/sh", "/bin/sh", script, ifname, NULL); + } + int status = 0; + waitpid(pid, &status, 0); + return status; +} + +#endif -- cgit v1.2.3